[IMP] inventory: expand on accounting and math

closes odoo/documentation#6475

X-original-commit: 9761eb44dc
Signed-off-by: Zachary Straub (zst) <zst@odoo.com>
Co-authored-by: toaa <104567387+toaa-odoo@users.noreply.github.com>
Co-authored-by: meng-odoo <101904966+meng-odoo@users.noreply.github.com>

content/applications/inventory_and_mrp/inventory/management/reporting/integrating_landed_costs.rst

@@ -2,6 +2,8 @@
 Integrating additional costs to products (landed costs)
 =======================================================
 
+.. _inventory/reporting/landed_costs:
+
 The landed cost feature in Odoo allows the user to include additional costs (shipment, insurance,
 customs duties, etc.) into the cost of the product.
 

content/applications/inventory_and_mrp/inventory/management/reporting/inventory_valuation_config.rst

@@ -29,6 +29,8 @@ between locations in a company's inventory.
    need to be periodically checked to ensure accuracy, and adjustments may be needed on an ongoing
    basis depending on the needs and priorities of the business.
 
+.. _inventory/inventory_valuation_config/accounting:
+
 Types of accounting
 -------------------
 
@@ -47,6 +49,8 @@ In *Continental* accounting, the cost of a good is reported as soon as a product
 stock. Additionally, a single *Expense* account is used for both input and output accounts in
 the balance sheet.
 
+.. _inventory/inventory_valuation_config/costing_methods:
+
 Costing methods
 ---------------
 
@@ -86,8 +90,7 @@ menu (e.g. :guilabel:`Standard`, :guilabel:`Average Cost (AVCO)`, or :guilabel:`
 (FIFO)`) and switch the :guilabel:`Inventory Valuation` to :guilabel:`Automated`.
 
 .. seealso::
-   :doc:`Using the inventory valuation
-   </applications/inventory_and_mrp/inventory/management/reporting/using_inventory_valuation>`
+   :ref:`Using the inventory valuation<inventory/reporting/using_inventory_val>`
 
 .. note::
    When choosing :guilabel:`Average Cost (AVCO)` as the :guilabel:`Costing Method`, changing the

content/applications/inventory_and_mrp/inventory/management/reporting/using_inventory_valuation.rst

@@ -2,6 +2,8 @@
 Using inventory valuation
 =========================
 
+.. _inventory/reporting/using_inventory_val:
+
 *Inventory valuation* is a quintessential accounting procedure that calculates the value of on-hand
 stock. Once determined, the inventory valuation amount is then incorporated into a company's overall
 value.